http://RadonWeek.WordPress.com - Oct. 17â24 has been designated as Radon Awareness Week. Radon gas is the second leading cause of lung cancer in the United States. The American government has known of this deadly household problem for over two decades. This year they passed the Federal Radon Action Plan. The plan calls for several branches of the U.S. government to implement programs to reduce the risk of lung cancer to the American public in their homes and workplaces. Call 1-800-NO-RADON.